Gradient 0%

Hi all,

my Edge Explore 2 sometimes permanently shows a gradient of 0%. Initially, it also often had trouble with tracking the elevation gain, but that seems to be working now. ClimbPro is triggered correctly and will show a changing remaining average gradient, but the current gradient (indicated in the box above the profile line) reads 0% all the time.

Does anybody have an idea how to fix this? Already did a factory reset of the device. It seems to be mostly working at least if I simply track/record without loading a pre-planned course/route. Obivously though, it should ideally also work with navigation/planned routes - especially since that's the only way to have ClimbPro.

Thanks and greetings from Germany